The University of Southampton
University of Southampton Institutional Repository

Performance of a photothermal detector with turbid liquids

Performance of a photothermal detector with turbid liquids
Performance of a photothermal detector with turbid liquids
A closed-cell photothermal detector for aqueous analytes has been evaluated at 254 and 678 nm. We used a detector with a water meniscus as a pressure sensor, whose periodic deflection was measured using a low-finesse optical fiber Fabry-Perot interferometer. Performance was compared with a commercial diode array spectrometer and found to be similar for absorption measurements in nonturbid samples, but the results were affected up to 60 times less by scattered light. Finally the photothermal cell was converted into an integrating cavity using ceramic inserts, showing freedom from scattering-related errors at 678 nm but a degradation in performance at 254 nm.
atmospheric and ocean optics, water, instrumentation, measurement, metrology, detection, fabry-perot, interferometry, scattering, turbid media, spectroscopy, optoacoustic, thermo-optic
0003-6935
4360-4367
Hodgkinson, Jane
ccb8c8c6-a374-4e1a-9997-83cc63531f58
Johnson, Mark
3d0db830-23aa-4083-9105-5f11707959df
Dakin, John P.
04891b9b-5fb5-4245-879e-9e7361adf904
Hodgkinson, Jane
ccb8c8c6-a374-4e1a-9997-83cc63531f58
Johnson, Mark
3d0db830-23aa-4083-9105-5f11707959df
Dakin, John P.
04891b9b-5fb5-4245-879e-9e7361adf904

Hodgkinson, Jane, Johnson, Mark and Dakin, John P. (2005) Performance of a photothermal detector with turbid liquids. Applied Optics, 44 (20), 4360-4367. (doi:10.1364/AO.44.004360).

Record type: Article

Abstract

A closed-cell photothermal detector for aqueous analytes has been evaluated at 254 and 678 nm. We used a detector with a water meniscus as a pressure sensor, whose periodic deflection was measured using a low-finesse optical fiber Fabry-Perot interferometer. Performance was compared with a commercial diode array spectrometer and found to be similar for absorption measurements in nonturbid samples, but the results were affected up to 60 times less by scattered light. Finally the photothermal cell was converted into an integrating cavity using ceramic inserts, showing freedom from scattering-related errors at 678 nm but a degradation in performance at 254 nm.

Full text not available from this repository.

More information

Published date: 2005
Keywords: atmospheric and ocean optics, water, instrumentation, measurement, metrology, detection, fabry-perot, interferometry, scattering, turbid media, spectroscopy, optoacoustic, thermo-optic

Identifiers

Local EPrints ID: 21004
URI: https://eprints.soton.ac.uk/id/eprint/21004
ISSN: 0003-6935
PURE UUID: 441e9b9f-684a-44aa-86b0-602dafacaba1

Catalogue record

Date deposited: 07 Mar 2006
Last modified: 15 Jul 2019 19:24

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×